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Byju's Answer
Standard XII
Mathematics
Distance Formula
The points A4...
Question
The points A(4,7) B(p,3) and C(7,3) are the vertices of a right triangle, right -angled at B, Find of P.
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Solution
REF.Image
A(4,7), B(p,3) & c (7,3) are vertices of right angle triangle then u
using Pythagoras theorem
(
A
C
)
2
=
(
A
B
)
2
+
(
B
C
)
2
(
7
−
4
)
2
+
(
3
−
7
)
2
=
(
p
−
4
)
2
+
(
3
−
7
)
2
+
(
p
−
7
)
2
+
(
3
−
3
)
2
9
+
16
=
(
p
−
4
)
2
+
16
+
(
p
−
7
)
2
9
=
p
2
+
16
−
8
p
+
p
2
+
49
−
14
p
2
p
2
−
22
p
+
56
=
0
p
2
−
11
p
+
28
=
0
p
2
−
7
p
−
4
p
+
28
=
0
(p-4)(p-7)=0
Hence p-4=0 & p-7=0
[p=4,7]
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2
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